Seasonal temperatures and low humidity provided wonderful conditions to end the work week, followed by a period of continued warm weather and heat indices possibly reaching 105 degrees.

According to NBC 5 Storm Team Meteorologist Kevin Jeanes, temperatures in much of the area were in the 70s and 80s Friday evening after temperatures dropped in many spots due to winds coming off the lake. For example, readings in Elmhurst dropped from 85 to 77 degrees within a few hours.

As darkness prevails, temperatures will drop into the low 60s overnight before pleasant conditions arrive. Temperatures across the region as a whole will be around 85 degrees, while values ​​along the lakeshores will be noticeably lower.

Father’s Day will bring warmer conditions, although heat index values ​​will be largely in line with air temperatures. High temperatures are expected to reach somewhere between 90 and 94 degrees, Jeanes said.

There will be a strong breeze, with gusts of 15 to 25 kilometers per hour.

Showers cannot be completely ruled out in the early morning, especially in parts of north-central Illinois near Interstate 39. However, it is possible that rain will be limited to the western part of Illinois.

The heat wave will intensify Monday, with peak heat indices possibly reaching 105 degrees both then and Tuesday.

The predicted heat is consistent with guidance recently issued by the National Weather Service’s Weather Prediction Center, pointing to the “first extended heat wave of the summer.”

Should warm weather materialize, Chicago’s best chance to set daily temperature records could be between June 22 and 23, with both records currently at 97 degrees.

Another record that could fall is the highest minimum temperature recorded on June 21 in history. That record is 74 degrees, while the limit was reached 101 years ago.